Air pollutant gaseous compounds forming and effects

Air pollutant gaseous compounds are manly formed by man activities and effect to the humans and environment such as acid rains, smog, ozone depletion.

Here, we are going to discuss about followings of air pollutants.

  • What are the air pollutant gases
  • How those gases are formed by natural and man activities
  • Effects of air pollutant gases
  • How to control and reduce those gases.


Examples of air pollutants gases

  • Carbon monoxide ( CO )
  • Carbon dioxide ( CO2 )
  • Sulfur dioxide ( SO2 )
  • Sulfur trioxide ( SO3 )
  • Hydrogen sulphide( H2S )
  • Oxides of nitrogen ( NOx )
  • Ozone ( O3 )

Carbon monoxide ( CO )

CO is a Colourless, odourless and tasteless gas and it is not soluble in water.

How carbon monoxide is formed?

  • CO is produced by incomplete combustion of compounds which contain carbon
  • In industrial processes
    Reaction of CO2 and carbon containing compounds
  • Dissociation of carbon dioxide at high temperatures.

Sinks of carbon monoxide

Carbon monoxide is removed from atmosphere by some natural processes.

  • By some microorganisms in soil.
  • CO is oxidized into CO2 by radicals ( hydroxyl(HO), perhydroxyl(HOO) ) , atomic oxygen(O) and ozone(O3.

Effects of carbon monoxide

  • CO combines with haemoglobin which prevent oxygen carrying to the cells.
  • CO also effects to plants. It inhibits nitrogen fixing ability of bacteria. It also affects leaf drop, leaf curling, reducing the size of leaf and premature ageing of the plants.

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